20694269 has 4 divisors (see below), whose sum is σ = 20857344. Its totient is φ = 20531196.

The previous prime is 20694263. The next prime is 20694283. The reversal of 20694269 is 96249602.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20694269 is a prime.

It is a super-2 number, since 2×20694269² = 856505538888722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20694263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81347 + ... + 81600.

It is an arithmetic number, because the mean of its divisors is an integer number (5214336).

Almost surely, 2^20694269 is an apocalyptic number.

It is an amenable number.

20694269 is a deficient number, since it is larger than the sum of its proper divisors (163075).

20694269 is a wasteful number, since it uses less digits than its factorization.

20694269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163074.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 20694269 is about 4549.0954045832. The cubic root of 20694269 is about 274.5469963319.

The spelling of 20694269 in words is "twenty million, six hundred ninety-four thousand, two hundred sixty-nine".